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THE 12VDC E30 DIGITAL PRESSURE SWITCH
A low voltage DC version of the E30 is available for battery operation and
for use in solar pumping systems. Functionally the 12V DC model is the
same as the mains voltage model except for the terminal block markings.
On the 12VDC model the active and neutral terminals are replaced by a
positive + and a negative – terminal. Supply voltage across the positive
and negative terminals must never exceed 24VDC or the fl ow switch will be
damaged. The supply terminals are reverse polarity protected, however,
the E30 will simply not operate unless the supply polarity is correct.
12VDC REMOTE INPUT
If a remote switch is connected to the 12V DC E30, the supply to the remote
switch must be taken from the positive terminal on the E30. The remote
switch and its connecting circuit will then operate at 12VDC.
12VDC E30 CONTROLLING A SINGLE PHASE PUMP
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